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/* v3_asid.c */
/* $Id$ */
/*
* Initial attempt to implement RFC 3779 section 3. I'd be very
* surprised if this even compiled yet, as I'm still figuring out
* OpenSSL's ASN.1 template goop.
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509v3.h>
/* RFC 3779 AS ID */
ASN1_SEQUENCE(ASRange) = {
ASN1_SIMPLE(ASRange, min, ASN1_INTEGER),
ASN1_SIMPLE(ASRange, max, ASN1_INTEGER)
} ASN1_SEQUENCE_END(ASRange)
ASN1_CHOICE(ASIdOrRange) = {
ASN1_SIMPLE(ASIdOrRange, u.id, ASN1_INTEGER),
ASN1_SIMPLE(ASIdOrRange, u.range, ASRange)
} ASN1_CHOICE_END(ASIdOrRange)
ASN1_CHOICE(ASIdentiferChoice) = {
ASN1_IMP(ASIdentiferChoice, u.inherit, ASN1_NULL),
ASN1_IMP_SEQUENCE_OF(ASIdentiferChoice, u.asIdsOrRanges, ASIdOrRange)
} ASN1_CHOICE_END(ASIdentiferChoice)
ASN1_SEQUENCE(ASIdentifiers) = {
ASN1_EXP_OPT(ASIdentifiers, asnum, ASIdentiferChoice, 0),
ASN1_EXP_OPT(ASIdentifiers, rdi, ASIdentiferChoice, 1)
} ASN1_SEQUENCE_END(ASIdentifiers)
IMPLEMENT_ASN1_FUNCTIONS(ASRange)
IMPLEMENT_ASN1_FUNCTIONS(ASIdOrRange)
IMPLEMENT_ASN1_FUNCTIONS(ASIdentiferChoice)
IMPLEMENT_ASN1_FUNCTIONS(ASIdentifiers)
static int i2r_ASIdentifierChoice(BIO *out,
ASIdentiferChoice *choice,
int indent,
const char *msg)
{
int i;
char *s;
if (choice == NULL)
return 1;
BIO_printf(out, "%*s%s: ", indent, "", msg);
switch (choice->type) {
case ASIdentifierChoice_inherit:
BIO_puts(out, "inherit");
break;
case ASIdentifierChoice_asIdsOrRanges:
for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges); i++) {
ASIdOrRange aor = sk_ASIdOrRange_num(choice->u.asIdsOrRanges, i);
if (i > 0)
BIO_puts(out, ", ");
switch (aor->type) {
case ASIdOrRange_id:
if ((s = i2s_ASN1_INTEGER(NULL, aor->u.id)) == NULL)
return 0;
BIO_puts(out, s);
OPENSSL_free(s);
break;
case ASIdOrRange_range:
if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->min)) == NULL)
return 0;
BIO_puts(out, s);
OPENSSL_free(s);
BIO_puts(out, " - ");
if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->max)) == NULL)
return 0;
BIO_puts(out, s);
OPENSSL_free(s);
break;
default:
return 0;
}
}
break;
default:
return 0;
}
BIO_puts(out, "\n");
return 1;
}
static int i2r_ASIdentifiers(X509V3_EXT_METHOD *method,
void *ext,
BIO *out,
int indent)
{
ASIdentifiers *asid = ext;
return (i2r_ASIdentifierChoice(out, asid->asnum, indent, "Autonomous System Numbers") &&
i2r_ASIdentifierChoice(out, asid->rdi, indent, "Routing Domain Identifiers"));
}
static void *v2i_ASIdentifiers(struct v3_ext_method *method,
struct v3_ext_ctx *ctx,
STACK_OF(CONF_VALUE) *values)
{
ASIdentifiers *asid = NULL;
ASIdentifierChoice *choice;
CONF_VALUE *val;
char *p;
int i;
#error this function does not check anywhere near enough error returns
#error this function needs to be broken up into several smaller ones
if ((asid = ASIdentifiers_new()) == NULL) {
X509V3err(X509V3_F_V2I_ASIdentifiers, ERR_R_MALLOC_FAILURE);
return NULL;
}
for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
val = sk_CONF_VALUE_value(values, i);
/* First figure out whether this is an AS or an RDI */
if (!strcmp(val->name, "as")) {
choice = &asid->asnum;
} else if (!strcmp(val->name, "rdi")) {
choice = &asid->rdi;
} else {
X509V3err(blah, blah);
X509V3_conf_err(val);
goto err;
}
/* Next check for inheritance */
if (!strcmp(val->value, "inherit")) {
/*
* Inheritance can't coexist with an explict list of numbers
*/
if (*choice != NULL) {
if ((*choice)->type == ASIdentifierChoice_inherit)
continue; /* Duplication is harmless, I guess */
X509V3err(blah, blah);
X509V3_conf_err(val);
goto err;
}
*choice = ASIdentifierChoice_new();
(*choice)->type = ASIdentifierChoice_inherit;
(*choice)->u.inherit = ASN1_NULL_new();
continue;
}
/*
* Number or range. Add it to the list, we'll sort it later.
*/
if (*choice != NULL && (*choice)->type == ASIdentifierChoice_inherit) {
X509V3err(blah, blah);
X509V3_conf_err(val);
goto err;
}
if (*choice == NULL) {
*choice = ASIdentifierChoice_new();
(*choice)->type = ASIdentifierChoice_asIdsOrRanges;
(*choice)->u.asIdsOrRanges = sk_ASIdOrRange_new();
}
if ((p = strchr(val->value, '-')) != NULL) {
/* It's a range */
#error not written yet
} else {
/* It's a number */
X509V3_get_value_int(val, blah_blah);
#error not written yet
}
}
/*
* Next we sort the stacks, and canonicalize the result.
*/
#error not written yet
return result;
err:
#error not complete
ASIdentifiers_free(asid);
return NULL;
}
X509V3_EXT_METHOD v3_asid = {
NID_ASIdentifiers, /* nid */
0, /* flags */
ASN1_ITEM_ref(ASIdentifiers), /* template */
0, 0, 0, 0, /* old functions, ignored */
0, /* i2s */
0, /* s2i */
0, /* i2v */
v2i_ASIdentifiers, /* v2i */
i2r_ASIdentifiers, /* i2r */
0, /* r2i */
NULL /* extension-specific data */
};
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